ld the size of parachute required on a space probe to allow it to land safetly on venus which has a thick atmosphere
The atmosphere of Venus is very thick, and a parachute would have much greater drag for a given size, than on Earth or Mars. So it could be smaller to achieve the same slowing of a space probe's descent. On Mars, a larger parachute would be required, but fortunately Mars, being a smaller planet, has much less gravity than Earth, so the parachute does not have to resist the same acceleration force (which is roughly the same on Venus as on Earth).
Venus has a very thick atmosphere. Even though it is similar size to Earth, no one could survive on Venus' surface as the atmosphere has a much higher pressure meaning that we would be crushed and burned!
Venus is roughly the same size as Earth and has its own thick atmosphere composed mainly of carbon dioxide. This atmosphere creates a strong greenhouse effect, leading to extremely high surface temperatures on Venus.
The Earth's atmosphere extends about 300 miles (480 kilometers) above the surface, with the majority of its mass concentrated within the first 10 miles (16 kilometers). The troposphere, where most weather occurs, is about 7 miles (11 kilometers) thick on average.
The main differences between the inner planets (Mercury, Venus, Earth, and Mars) are their size, composition, atmosphere, and proximity to the Sun. Mercury is the smallest and closest to the Sun, Venus has a thick toxic atmosphere, Earth is the only planet known to support life, and Mars has evidence of flowing water in the past.
The planet you are describing matches the characteristics of Venus. Venus is nearly the same size as Earth, has no moons, and its atmosphere is mostly composed of carbon dioxide, with thick clouds of sulfuric acid.
The manipulated variable in this experiment would be the size of the parachutes. By changing the size of the parachutes, the scientist can observe how it affects the time it takes for the parachutes to fall to the ground.
The atmosphere of Venus is very thick, and a parachute would have much greater drag for a given size, than on Earth or Mars. So it could be smaller to achieve the same slowing of a space probe's descent. On Mars, a larger parachute would be required, but fortunately Mars, being a smaller planet, has much less gravity than Earth, so the parachute does not have to resist the same acceleration force (which is roughly the same on Venus as on Earth).
Venus has a very thick atmosphere. Even though it is similar size to Earth, no one could survive on Venus' surface as the atmosphere has a much higher pressure meaning that we would be crushed and burned!
Venus is roughly the same size as Earth and has its own thick atmosphere composed mainly of carbon dioxide. This atmosphere creates a strong greenhouse effect, leading to extremely high surface temperatures on Venus.
The variable being studied is the size of the parachutes.
This doesn't seem likely. The reason it doesn't have a thick atmosphere in the first place is because of its small size (1122 km, if you mean the moon of Saturn); this makes for a weak gravitational field, and any atmosphere it might ever acquire will evaporate into space rather quickly.
The atmosphere of Venus is very thick, and a parachute would have much greater drag for a given size, than on Earth or Mars. So it could be smaller to achieve the same slowing of a space probe's descent. On Mars, a larger parachute would be required, but fortunately Mars, being a smaller planet, has much less gravity than Earth, so the parachute does not have to resist the same acceleration force (which is roughly the same on Venus as on Earth).
Due to their large size and proportionately high gravity, the atmospheres of these planets are quite thick.
The Earth's atmosphere extends about 300 miles (480 kilometers) above the surface, with the majority of its mass concentrated within the first 10 miles (16 kilometers). The troposphere, where most weather occurs, is about 7 miles (11 kilometers) thick on average.
Wouldn't work since there is no air at all. Edit: The atmosphere is thin, but there's enough to make a parachute work. We know this because some space probes have used parachutes to land on Mars. Sorry, I don't know what size they used.
The manipulated variable in this experiment would be the size of the parachute. The scientist would change the size of the parachutes to see how it affects the time it takes for them to fall to the ground.